- Digital Commonwealth
- Perkins School for the Blind
A boy and a girl standing behind a table with two grooved, wooden rods on a frame in front of them. The children hold their hands up with flat fingers. Imperial Royal Institute for the Education of the Blind, Vienna. Alexander Mell.
Black and white photograph
- Samuel P. Hayes Research Library, Perkins School for the Blind, Watertown, MA. Contact host institution for more information.